Construction and characterization of the fringe field monochromator for a field emission gun

@article{Mook2000ConstructionAC,
  title={Construction and characterization of the fringe field monochromator for a field emission gun},
  author={Mook and Kruit},
  journal={Ultramicroscopy},
  year={2000},
  volume={81 3-4},
  pages={129-39}
}
Although some microscopes have shown stabilities sufficient to attain below 0.1 eV spectral resolution in high-resolution electron energy loss spectroscopy, the intrinsic energy width of the high brightness source (0.3-0.6 eV) has been limiting the resolution. To lower the energy width of the source to 50 meV without unnecessary loss of brightness, a monochromator has been designed consisting of a short (4 mm) fringe field Wien filter and a 150 nm energy selection slit (nanoslit) both to be… CONTINUE READING